Even with two people you can have problems with sleeping if one wants to keep going. 32 players would be pretty much impossible.

With that many people I can't see it working as people also like different things.. you would pretty much have to give up on rules like teleporting ores or world hopping.

In the end it would probably be best in a PVP format but personally I dislike that style of play and the people it tends to attract... so I wouldn't play it at all.